uniqueVlaues

Question

public static HashMap<Integer, String> uniqueValues(HashMap<Integer,
String> a_map){
HashMap<Integer, String> hmap = new HashMap<Integer, String>();
for (Map.Entry<Integer, String> pair : a_map.entrySet()) {
if(pair.getValue().equals(a_map.entrySet())){
a_map.remove(Value);
}
}
return hmap;
}

hi everyone, I wanted to remove all Value(Strings) that the function receives from a_map. and will return HashMap<String, Integer> hmap = new HashMap<String, Integer>() Can someone give me some hint please. thanks

Answer 1

You mean you want your method to return a new map with removed duplicate values? In that case your check should be something like this:
if (!hmap.containsValue(pair.getValue())) {
hmap.put(pair.getKey(), pair.getValue());
}

Answer 2

no i actually I mean I would like to have hmap that hold only unique value of a_map.
exp if a_map holds [{2,”q”} , {3, “e”}, {21, “q”}]
so now hmap should only hold [{3,”e”}] but in terms of <String, Integer> so it shoulf be like this hmap = {“e”, 3};
thank you, I know it is complicated